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Product Brief Description
The GE 369B1871G5003 BAO21 Analog Output Base is a terminal board used within the GE Mark VIe control system. Its primary purpose is to provide a termination point for 8 channels of analog output signals, which can be configured for either mA (milliamps) or V (volts). It serves as the physical interface between the system’s Analog Output (PAOC) I/O pack and the external field devices that require a variable signal for control. This base is typically used in simplex or dual-redundant systems.
Detailed Product Description
The 369B1871G5003 is a crucial part of the analog output chain in a Mark VIe system. The board receives commands from the controller via the I/O pack, and then it generates the corresponding analog signal (e.g., a 4-20 mA current loop or a 0-10 VDC voltage) to drive field equipment. This allows for precise control of devices like variable speed drives, valve positioners, or other process control instruments. The board’s design is tailored for either a single I/O pack in a simplex configuration or two I/O packs for dual redundancy, ensuring a higher level of reliability for critical control loops.
Key Features and Specifications
- Part Number: 369B1871G5003
- Model Name: BAO21
- Module Type: Analog Output Base (Simplex or Dual-Redundant)
- Channels: 8 analog output channels
- Output Type: Configurable for current (e.g., 0-20 mA) or voltage (e.g., 0-10 V) outputs.
- Redundancy: Designed for simplex or dual-redundant setups.
- Primary Function: Provides wiring termination and signal distribution for analog output I/O packs.
- Compatibility: Used with specific Mark VIe Analog Output (PAOC) I/O packs.
Functional Role in a System
In a Mark VIe system, the 369B1871G5003 acts as the final stage of the control output. The controller sends a digital value representing the desired output level. The I/O pack converts this digital value into an analog signal, and the BAO21 base provides the physical connection for that signal to be sent to a device in the field. This precise conversion and reliable connection are essential for maintaining stable control over a process.
Common Applications
The BAO21 is ideal for applications where continuous, variable control is needed. It is commonly found in:
- Turbine Control: Adjusting fuel valves or other actuators to regulate the turbine’s speed or load.
- Process Control: Controlling the flow rate, pressure, or temperature in a chemical or industrial process by manipulating control valves or pumps.
- Actuator and Drive Control: Providing the setpoint signal for motors, drives, and other actuators that require a proportional input.
